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The knot (/ n ɒ t /) is a unit of ... 1969, these standards were progressively amended to specify that distances were to be in nautical miles, and speeds in knots. [12]
4–6 knots 4–7 mph 6–11 km/h 1.6–3.3 m/s 1–2 ft 0.3–0.6 m Small wavelets still short but more pronounced; crests have a glassy appearance but do not break Wind felt on face; leaves rustle; wind vane moved by wind 3 Gentle breeze 7–10 knots 8–12 mph 12–19 km/h 3.4–5.4 m/s 2–4 ft 0.6–1.2 m
More simply, the speed of sound is how fast vibrations travel. At 20 °C (68 °F), the speed of sound in air is about 343 m/s (1,125 ft/s; 1,235 km/h; 767 mph; 667 kn), or 1 km in 2.91 s or one mile in 4.69 s. It depends strongly on temperature as well as the medium through which a sound wave is propagating.
10 −12: 4.12 × 10 −12: 1.48 × 10 − ... 1 knot (nautical mile per hour) 10 0: 1.2: 4.32: ... sailfish—fastest fish; speed of go-fast boat. 40: 140: 90: 1.3 ...
Kitsap Fast Ferries is a passenger ferry service operating between Seattle and Kitsap ... 29 mph) to 12 knots (22 km/h; 14 mph) while passing through ...
An aircraft's indicated airspeed in knots is typically abbreviated KIAS for "Knots-Indicated Air Speed" (vs. KCAS for calibrated airspeed and KTAS for true airspeed). The IAS is an important value for the pilot because it is the indicated speeds which are specified in the aircraft flight manual for such important performance values as the stall ...
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In 1968, a Soviet November-class submarine reportedly tracked an American carrier group traveling at 31 knots (57 km/h; 36 mph). [63] Uncrewed torpedo speed claims range from 60 knots (110 km/h; 69 mph) for the British Spearfish torpedo [64] to 200 knots (370 km/h; 230 mph) for the Russian VA-111 Shkval. [65